Measurements:
°C
°F
St. George Island
82°F
SE 5 mph
Feels like: 86°F
Precip: 0%
World Resorts USA St. George Island Weather

St. George Island Sea Water Temperature

Current Sea Water Temperature:
+80.0°F
Maximum Sea Water Temperature in May: 87.8°F
Minimum Sea Water Temperature in May: 74.4°F
Average water temperature in May: 80.7°F

Sea Water Temperature for the Last 10 Days:

May 14 80.0°F May 09 79.0°F
May 13 79.4°F May 08 79.2°F
May 12 79.4°F May 07 77.8°F
May 11 79.8°F May 06 76.4°F
May 10 79.6°F May 05 75.6°F

When is the Warmest Sea for St. George Island?

According to our data for the last three years for St. George Island the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for St. George Island was 90.5°F. The maximum and minimum values were 88.6°F and 92.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for St. George Island was 90.4°F. The maximum and minimum values were 89.0°F and 93.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St. George Island was 87.3°F. The maximum and minimum values were 85.2°F and 89.0°F respectively.

Best Time to Visit St. George Island
The most sunny months:
October 20 days
March 16 days
April 16 days
The most warm months:
July 90.9 °F
August 90.7 °F
June 88.6 °F
Warmest sea temperature:
August 90.5 °F
July 89.5 °F
September 87.6 °F
The most cold months:
January 59.9 °F
December 63.9 °F
February 64.5 °F
The most rainy months:
August 5 days
July 4 days
September 3 days
The most windy months:
January 9 mph
November 9 mph
March 9 mph

St. George Island on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +56
Hawaii +76
Honolulu +76
Houston +94
Las Vegas +88
Los Angeles +66
Maui +70
Miami +94
Miami Beach +90
New York +68
San Diego +66
San Francisco +62
Sarasota +94
Tampa +94
24 Hours Weather Forecast
St. George Island
Local time: 13:07
14 may, thursday
1500 86°F
E
9 mph
1800 82°F
E
14 mph
2100 74°F
SE
7 mph
15 may, friday
0000 70°F
S
7 mph
0300 66°F
S
8 mph
0600 64°F
SW
7 mph
0900 72°F
SW
7 mph
1200 82°F
NW
6 mph